Tiling wall, cable protruding from wall

[Graham]

Hello folks, I just finished installing my base and wall units and now need to tile the kitchen. I'm using 10cm x 20cm metro tiles, and will tile up to the bottom of the wall units (so about 60cm up from the worktop, which I am fitting first).

I thought about this and realised that a lighting cable, which I need for later, is sticking out the wall. Do I drill a 20mm hole in the ceramic metro tile and just pop the cable through it? Or maybe I should insert a rubber grommet in the hole and then push the cable through that?

Any advice appreciated.

 

[Graham]

Oh and, yes, the walls have been painted in white water based paint , I will be scrubbing all that off back to bare plaster, then applying some Mapei Primer G (diluted 1:1) prior to any tiling. I thought I'd go with glass splashback, but it turned out to be very expensive, so chose to tile.

 

[macten]

Is that the final position you need for that cable to come out the wall?

 

[Graham]

To be honest, it probably could have been a little higher, in line with the bottom of that wall unit, but at the time I didn't know what wall units I was having so it will pretty much stay there, yes.